PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-14:58:00
G01     39.5           14.2                6.2 +/-    2.65      15.8 +/-    2.65  0.040 / 0.080
G06     173.5          41.0               10.2 +/-    0.95      14.6 +/-    0.95  0.040 / 0.070
G13     235.0          21.4                8.2 +/-    2.10      17.4 +/-    2.10  0.340 / 0.220
G15     269.4          11.5                7.5 +/-    1.72      20.1 +/-    1.72  0.150 / 0.310
G17     355.4          71.4                7.4 +/-    0.74       7.8 +/-    0.74  0.030 / 0.020
G19     284.8          71.0                6.7 +/-    0.57       7.0 +/-    0.57  0.030 / 0.030
G24     316.0          19.9                4.6 +/-    2.74      10.0 +/-    2.74  0.040 / 0.040
G28     67.3           50.7                7.0 +/-    1.57       8.7 +/-    1.57  0.040 / 0.050
G30     154.8          25.3                9.4 +/-    1.72      18.3 +/-    1.72  0.100 / 0.210